Mona Marshall is an American voice actress and writer. She is most well known for voicing many of the female characters (e.g. Sheila Broflovski, Linda Stotch, etc.) on Comedy Central's landmark animated series South Park, replacing the late Mary Kay Bergman, who died after the show's first three years. She is best known for voicing Izzy Izumi in the Digimon Adventure series and Terriermon in Digimon Tamers.